<html>
<head><meta charset="utf-8"><title>Chalkification status · wg-traits · Zulip Chat Archive</title></head>
<h2>Stream: <a href="https://rust-lang.github.io/zulip_archive/stream/144729-wg-traits/index.html">wg-traits</a></h2>
<h3>Topic: <a href="https://rust-lang.github.io/zulip_archive/stream/144729-wg-traits/topic/Chalkification.20status.html">Chalkification status</a></h3>

<hr>

<base href="https://rust-lang.zulipchat.com">

<head><link href="https://rust-lang.github.io/zulip_archive/style.css" rel="stylesheet"></head>

<a name="247146870"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/144729-wg-traits/topic/Chalkification%20status/near/247146870" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Nick Cameron <a href="https://rust-lang.github.io/zulip_archive/stream/144729-wg-traits/topic/Chalkification.20status.html#247146870">(Jul 25 2021 at 21:35)</a>:</h4>
<p>I found <a href="https://github.com/rust-lang/wg-traits/issues/25">https://github.com/rust-lang/wg-traits/issues/25</a> (and an older tracking issue on the Rust repo), but it doesn't seem up to date. Is there somewhere I can see a high level view of the current status of using Chalk in rustc?</p>



<a name="247147277"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/144729-wg-traits/topic/Chalkification%20status/near/247147277" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Jack Huey <a href="https://rust-lang.github.io/zulip_archive/stream/144729-wg-traits/topic/Chalkification.20status.html#247147277">(Jul 25 2021 at 21:45)</a>:</h4>
<p>That's mostly up to date. Bound var tracking is done though</p>



<a name="247147534"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/144729-wg-traits/topic/Chalkification%20status/near/247147534" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Nick Cameron <a href="https://rust-lang.github.io/zulip_archive/stream/144729-wg-traits/topic/Chalkification.20status.html#247147534">(Jul 25 2021 at 21:52)</a>:</h4>
<p>Once those four boxes are ticked, are we confident we can just flick a switch and use Chalk? Os is that just the known issues?</p>



<a name="247147849"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/144729-wg-traits/topic/Chalkification%20status/near/247147849" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> bjorn3 <a href="https://rust-lang.github.io/zulip_archive/stream/144729-wg-traits/topic/Chalkification.20status.html#247147849">(Jul 25 2021 at 22:00)</a>:</h4>
<p>Rust-analyzer hangs insude chalk once in a while, so I guess not.</p>



<a name="247148497"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/144729-wg-traits/topic/Chalkification%20status/near/247148497" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Jack Huey <a href="https://rust-lang.github.io/zulip_archive/stream/144729-wg-traits/topic/Chalkification.20status.html#247148497">(Jul 25 2021 at 22:17)</a>:</h4>
<p>In general, Chalk is not ready to just flick a switch. There are still technical problems with the integration (those listed), there are incomplete design areas in Chalk (i.e. specialization), and there are bugs (like the known closure bug).</p>



<a name="248541257"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/144729-wg-traits/topic/Chalkification%20status/near/248541257" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Jonathan de Jong <a href="https://rust-lang.github.io/zulip_archive/stream/144729-wg-traits/topic/Chalkification.20status.html#248541257">(Aug 05 2021 at 21:45)</a>:</h4>
<p>Would chalk be able to solve specialisation at all, though? I’m not versed in the logic inference rules that chalk uses, but I imagine it wouldn’t be able to tell “yes” from a “better yes”, in this case, if those questions were asked at different points in time, with different facts. For such a thing, maybe all implementation-derived ascertained results need to be re-done once all other facts got resolved, or something</p>



<a name="248544853"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/144729-wg-traits/topic/Chalkification%20status/near/248544853" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Jack Huey <a href="https://rust-lang.github.io/zulip_archive/stream/144729-wg-traits/topic/Chalkification.20status.html#248544853">(Aug 05 2021 at 22:20)</a>:</h4>
<p>Chalk should be able to handle, specialization, yes</p>



<a name="248544867"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/144729-wg-traits/topic/Chalkification%20status/near/248544867" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Jack Huey <a href="https://rust-lang.github.io/zulip_archive/stream/144729-wg-traits/topic/Chalkification.20status.html#248544867">(Aug 05 2021 at 22:21)</a>:</h4>
<p>This is mostly (completely?) unimplemented though</p>



<a name="248545005"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/144729-wg-traits/topic/Chalkification%20status/near/248545005" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Jack Huey <a href="https://rust-lang.github.io/zulip_archive/stream/144729-wg-traits/topic/Chalkification.20status.html#248545005">(Aug 05 2021 at 22:22)</a>:</h4>
<p>see <a href="https://github.com/rust-lang/chalk/issues/9">chalk#9</a> and <a href="https://github.com/rust-lang/chalk/issues/219">chalk#219</a></p>



<hr><p>Last updated: Aug 07 2021 at 22:04 UTC</p>
</html>